Mechanical movement.



No. 859.581. PATENTEID JULY 9, 1907,

F. H. RICHARDS.

MECHANICAL MOVEMENT.

APPLICATION FILED JULY24.1902.

3 SHEETS-SHEET 1.

iVit1zesses:

PATENTED JULY 9, 1907.

F. H RICHARDS. MECHANICAL MOVEMENT.

APPLICATION TILED JULY24,1902.

3 SHEETS-SHEET 2.

Inventor: ZWW

THE NORRIS PETERS co, WASHINGTON, n. c.

No. 859,531. I Y PATENTED JULY 9. 1907.

F. H. .RIOHARDSQ MECHANICAL MOVEMENT.

APPLICATION FILED IULY24,1902.

s SHEETS-SHEET \mllimw FRANCIS H. RICHARDS, OF HARTFORD, CONNECTICUT.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented July 9, 1907.

Application filed July 24, 1902. $eria1N0.116,758.

To all whom it may concern:

Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States,residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inMechanical Movements, of which the following is a specification.

My present invention pertains to mechanical movements, and relates tothe organization of devices capable of modifying movements impartedthereto to attain a' circumferential movement of an angularly movablemember corresponding with the movements of an angularly movable memberas measured upon the diameter of the circle it would describe with an advancing member and an advancing and retreating member to producecoincident movements of said members during an. appreciable period inthe advance of said advancing and retreating member andinstrumentalities carried by said advancing and retreating member op- 1reference characters denote like erative in connection with saidadvancing member during said coincident movement.

One of the objects of this invention is to provide an organizationwherein the above functions are brought about in a simple manner withthe employment of few parts and with little idle movement of the parts.

This invention consists of a modified form of the device shown in mypending application Serial No. 116,759,1iled contemporaneously herewithand is applicable to many of the various devices named therein asillustrations of the use of such movements. And certain other featuresillustrated herein are claimed in my co-pending application Serial No.119,045, filed August 9, 1902, which on December 26, 1905, matured intoLetters Patent No. 808,404.

I have illustrated an organization comprising a mechanical movementinvolving the principles of this invention in the accompanying drawingsin which like parts throughout the several views. A

Figure 1, is a left-side elevation; Fig. 2, a right side elevation; Fig.3, a plan View; Fig. 4, a front elevation; Fig. .5, a vertical crosssection on line xx of Fig. 3; Fig. 5 is a vertical cross section on lineyy of Fig. 3; and Fig. 6, a diagram of the movements of the severalparts.

Referring to the drawings, I will describe'in detail the mechanism shownwhich is one of the forms which and a handle 6 for rotatingthe same.Upon the end of I the driving shaft 3 opposite the crank 5, is mounted acrank 7, having a wrist pin 8. The wrist pin 8, of the crank 7 engages aslotted crank 9 fast on a shaft 10 mounted eccentrically of the drivingshaft 3 in bearings .11 upstanding from the base 2.

Upon the rotation of the driving shaft 3 by the handle 6 the wrist pin 8of crank 7 will drive the shaft 10 through the slotted crank 9 atvarying velocities through out the rotation of the driving-shaft 3. Agear 12 is mounted fast on the shaft 10 and meshes with a larger gear13, fast on a shaft 14 mounted in bearings 15 upstanding from the base2. Fast upon the shaft 14 is mounted a pulley 16 which carries anddrives a belt 17,

passing over a pulley 18 on a shaft 19 mounted in bearings 20 upstandingfrom the base 2.

It will be seen that the uniform rotation of driving shaft 3 will betransmitted to the shaft 10 as a continuing rotation of varyingvelocity, and that said continuous rotation of varying velocity will beimparted to the pulley 16 through the gears 12 and 13. The pulley 16drives a belt 17 and the upper run of the belt 17 will be given acontinuously advancing movement at varying velocities. The advancingmovement of the upper run of the belt 17 will be the circumferentialdevelopment of the pulley 16.

A spiral gear 21 is mounted fast upon the driving shaft 3 and mesheswith the spiral gear 22 of like pitch and diameter mounted upon a stud23 at right angles to the shaft 3. The spiral gear 22 is driven at thesame speed as the driving shaft 3. A crank 24 projects from the hub ofthe spiral gear 22 and carries a wrist pin 25, the radius of the path ofthe wrist pin 25 being the same as the path of the wrist pin 8 on crank7. The wrist pin 25 engages a slotted crank 26 mounted upon a pivot 27,which pivot 27 has the same eccentricity with the stud 23 as the shaft10 has with the driving shaft 3. Therefore, it will be seen that thecrank 26 will be driven at like velocities and with the same variationof velocity as the shaft 10.

The spiral gears 21 and 22 are set in mesh so that the wrist pin 8 ofcrank 7 will be passing downward (see Figs. 1 and 2) at the same timethat the crank 26 is passing from right to left. (See Fig. 3).

The crank 26 carries a wrist pin 28. A carrier 29 is mounted inguideways 30, upstanding from the base 2, to slide parallelly of thebelt 17, and said carrier 29 is provided with a transverse slot 31 inwhich a block 32 is adapted to slide. The block 32 is provided with abearing in which the wrist pin 28 of the crank 26 is journaled. The slot31 constitutes a yoke in which the wrist pin 28, guided by the block 32is adapted to work. Upon the rotation of the driving shaft 3, the crank26 driven at varying velocities as already described will, through thewrist pin 28 and the yoke connection just described, reciprocate thecarrier 29 parallelly of the belt 17.

The parts are so arranged that a line may be drawn through the centersof the pivot 27, stud 23, and wrist pin 28 substantially parallel withthe line of length of the slot 31, when a substantially horizontal linemay be drawn through the centers of the wrist pin 8 and the shafts 3 and10. 7

To attain the coincidence of movement between the upper run of the beltand the carrier 29 during the advance of said carrier the speed varyingdevices should be set as set forth in my above named pending applicationwhen the coincidence is maintained throughout one hundred and fortydegrees in the rotation of the driving shaft 3 or thereabout.

Upon the carrier 29 are provided transverse guides 33 in which a pointer34 is mounted to slide transversely of the carrier 29. The pointer 34 isconnected with a crank 35 by a link 36. The crank 35 is mounted fast onthe hub of a spiral gear 37 mounted on a stud 38 upstanding from thebase 2. The spiral gear 37 meshes with a spiral gear 39 of like pitchand diameter fast on the driving shaft 3. The teeth of the spirals 37and 39 are inclined in the opposite direction to those of the spirals 21and 22 and therefore the spirals 37 and 22 being upon opposite sides ofthe shaft 3, are driven in the same direction. The cranks 26 and 35 areset opposite so that the wrist pin 28 of crank 26 moves from right toleft as the wrist pin of crank 35 moves from left to right.

In moving from left to right the crank 35 describes that half of itsrevolution nearest the belt 17 and drives the pointer 34 in that portionof its stroke furthest advanced in the direction of said belt. It isduring the greater part of this half revolution of the crank 35 that thecoincident movements of the belt and carrier occur and as the carrier 29passes from right to left and the crank 35 from left to right thepointer 34 receives the resultant motion caused by the opposed movementsof the carrier 29 and crank 35 and the advance movement of the crank 35giving to said pointer an accelerated movement and causing it to travela greater distance than would otherwise be the case. The pointer 34 isso disposed and is made of such length that it will reach the near edgeof the belt 17 just as the coincidence of movement between the belt 17and the carrier 29 is established and travel across said belt and backduring its accelerated movement and leave the belt at the end of saidcoincidence as the crank 35 travels 140 degrees or thereabouts. Justbefore the pointer reaches the belt it is caused to acquire speed andjust after it leaves the belt it slows down, these movements takingplace during the periods before and after coincidence of movement hasbeen established between the belt and the carrier during the movement ofthe carrier from right to left, while during the return movement of thecarrier from left to right there is practically a cessation of movementin the point, only a slight reciprocation taking place. These movementsare clearly illustrated in the diagram at Fig. 6, that portion of thediagram to the left representing a line described upon the advancingmember by the pointer, the blank portion to the extreme leftrepresenting the belt while that portion next to the right represents aline described upon an imaginary extension of the belt to the extremebackward travel of the pointer.

It is obvious that the principle involved in this invention may beapplied in numerous ways for the accomplishment of a variety of resultswithout departing from the spirit of my invention, and the form shown ismerely illustrative of the application of said principle to one of manyorganizations. I have seen it to use two of the variable transmitters toeffect the coincidence of movement between the belt and carrier but onefrom which both movements may be taken maybe used.

Having described my invention, I claim 1. In a mechanical movement, thecombination with acrank embodying a wrist, of a carriage reciprocatoryin a path adjacent to the orbit of the crank wrist, a slide mounted onsaid carriage and reciprocatory in a path transverse to the path ofmovement of the carriage, the reciprocation of said carriage being sotimed and the axis of the crank being so located relative to the saidpath of movement as to cause the line of the path of reciprocation ofsaid slide, as this moves with the carriage, to approach and pass beyondthe axis of the crank while the wrist is moving toward and then awayfrom said slide, and to approach and pass beyond said axis in returning,and a connection between the wrist and slide.

2. In a mechanical movement, the combination with a member and means forimparting to the same a continuous variable linear motion, of a carrierreciprocable in a path parallel thereto, means for reciprocating thesame with the motion of a portion of its forward excursion coincidentwith such linear motion, a slide mounted on the carrier and reciprocahletransversely of the path of motion thereof and into and out of the pathof movement of the inearly moving member, a crank embodying a wrist, an.i a link connecting; the crank and slide, the axis of said crank beingso located as to cause the line of the path of reciprocation of saidslide, as this moves with the carriage, to approach and pass beyond theaxis of the crank while the wrist is moving toward and then away fromsaid slide, and to approach and pass beyond said axis in returning.

FRANCIS TI. RICHARDS.

Witnesses .lo'HN 0. Summit, MARCUS P. HOPKINS.

